3-Amino-2,6-piperidinedione → 3-(2-methyl-5-nitro-4-oxo-4H-quinazolin-3-yl)-piperidine-2,6-dione

Participants

Reaction Steps

In certain embodiments, step (a) (reacting 2-methyl-5-nitro-4H-benzo[d][1,3]oxazin-4-one and 3-aminopiperidine-2,6-dione or a salt thereof to form 3-(2-methyl-5-nitro-4-oxoquinazolin-3(4H)-yl)piperidine-2,6-dione) is conducted at a temperature ranging from about 0 to about 150° C., from about 25 to about 120° C., from about 50 to about 100° C., from about 60 to about 100° C., from about 70 to about 90° C., from about 70 to about 85° C., or from about 75 to about 80° C. In certain embodiments, step (a) is conducted at a temperature from about 75 to about 80° C.

Provenance & Evidence